Features:Brand new and high quality.Multicoated optics guarantee superior light transmission and brightness.Ideal for auto repair and machinery where metric threads are specified.Suitable for soft tapping metal， aluminum， iron.Specification:Material :High Speed Steel.Metric.Shank:1/4"(6.35mm) hex shank.Head Diameter:M3，M4，M5，M6，M8，M10.Thread:M3-0.5M4-0.7M5-0.8M6-1.0M8-1.25M10-1.5Note:Due to lighting effects， monitor's brightness ， contrast settings etc， there could be some slight differences in the color tone of the pictures and the actual item.Package Included:6pcs x Hex Metric Plug Tap Drill BitsNO Retail Box. Packed Safely in Bubble Bag.